mononuclidic造句

例句与造句

1. A list of the 22 mononuclidic elements is given at the end of this article.
2. In practice, only 11 of the mononuclidic elements are used in standard atomic weight metrology.
3. Non-mononuclidic elements are marked with an asterisk, and the long-lived primordial radioisotope given.
4. However, such an error can exist and even be important when considering individual atoms for elements that are not mononuclidic.
5. These isotopes are monoisotopic, but due to the presence of the long lived radioactive primordial nuclide, are not mononuclidic.
6. It's difficult to find mononuclidic in a sentence. 用mononuclidic造句挺难的
7. The single mononuclidic exception to the odd "'Z "'rule is beryllium, which has 4 protons and 5 neutrons.
8. The set of monoisotopic elements overlap but are not the same as the set of 22 mononuclidic elements, which are characterized as having essentially only one isotope ( nuclide ) found in nature.
9. The reason for this is the occurrence of certain long-lived radioactive primordial nuclides in nature, which may form admixtures with the monoisotopics, and thus prevent them from being naturally mononuclidic.
10. Cosmogenic sources of 129 I produce very tiny quantities of it that are too small to affect atomic weight measurements; iodine is thus also a mononuclidic element one that is found in nature only as a single nuclide.
11. In 3 additional cases ( bismuth, thorium, and protactinium ), mononuclidic elements occur primordially which are not monoisotopic because the naturally occurring nuclide is radioactive, and thus the element has no stable isotopes at all.
12. A "'mononuclidic element "'is one of the 22 chemical elements that is found naturally on Earth essentially as a single nuclide ( which may, or may not, be a stable nuclide ).
13. However, there are 22 mononuclidic elements of which essentially only a single isotope is found in nature ( common examples are fluorine, sodium, aluminum and phosphorus ) and for these elements the relative atomic mass and atomic mass are the same.
14. There are 19 elements in the first category ( which are both monoisotopic and mononuclidic ), and 3 ( bismuth, thorium and protactinium ) in the second category ( mononuclidic but not monoisotopic, since they have zero, not one, stable nuclides ).
15. There are 19 elements in the first category ( which are both monoisotopic and mononuclidic ), and 3 ( bismuth, thorium and protactinium ) in the second category ( mononuclidic but not monoisotopic, since they have zero, not one, stable nuclides ).
16. Of the 26 " monoisotopic elements " that, by definition, have only one stable isotope, there exist 7 ( 26 minus 19 = 7 ) which are nevertheless " not " considered mononuclidic, due to the presence of a significant fraction of a very long-lived ( primordial ) radioisotope occurring in their natural abundance.
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